Abstract: A core ring for an impeller or turbine of a torque converter is provided. The core ring includes an annular base portion including a convex blade side surface portion and a concave stator side surface portion and a wrapped outer diameter portion including an outwardly extending lip protruding radially outward from the annular base portion. A method of forming a torque core ring for an impeller or turbine of a torque converter is also provided. The method includes forming a wrapped outer diameter portion including an outwardly extending protrusion protruding radially outward from an annular base portion including a convex blade side surface portion and a concave stator side surface portion. A torque converter including the core ring is also provided.

Abstract: A starting device includes a pump impeller, a turbine runner for rotating together with the pump impeller, a damper mechanism having an input element receiving power from an internal combustion engine, an output element coupled to a speed change device, an intermediate element between the input and output elements, and a dynamic damper for damping vibration at a predetermined frequency among vibration transferred to the speed change device. The starting device includes a first dynamic damper having an elastic member and a first mass body coupled the first elastic member, and coupled to the intermediate element; and a second dynamic damper having an elastic member and a second mass body connected to the second elastic member, and coupled to the intermediate element. The first mass body of the first dynamic damper or the second mass body of the second dynamic damper includes at least the turbine runner.

Abstract: A hydrokinetic torque converter comprises an impeller rotatable about a rotational axis, a coaxial turbine, and a stator disposed between the impeller and the turbine. The stator includes an annular stator hub, an annular radially outer stator rim, a plurality of stator blades radially outwardly extending between the stator hub and the stator rim, and an annular outer stator flange extending radially outwardly from the stator rim thereof and disposed between an impeller core ring and a turbine core ring. The stator further includes a plurality of hydraulic pressure grooves provided on at least one of axially opposite impeller and turbine side surfaces of the stator flange. The hydraulic pressure grooves face at least one of the impeller and turbine core rings so as to create a hydrodynamic lift between the stator and at least one of the impeller and turbine core rings in the axial direction.

Abstract: An automatic transmission device for an automobile includes a torque converter accommodated in a torque converter housing, a stator shaft supporting a stator of the torque converter, a torque converter housing, a stator shaft supporting a stator of the torque converter, a torque converter sleeve provided concentrically with the stator shaft and coupled with an inner periphery side of an impeller shell of the torque converter, a first bearing provided between an inner peripheral surface of the torque converter sleeve and an outer peripheral surface of the stator shaft, and a second bearing provided between an outer peripheral surface of the torque converter sleeve and an inner surface of the torque converter housing.

Abstract: A torque converter, including: a damper assembly including a cover plate including a first plurality of openings, a flange, and at least one spring in contact with the flange and the cover plate; a turbine including at least one first blade and a shell including a portion disposed radially inward of the at least one blade, and a second plurality of openings in the portion; a turbine plate with a third plurality of openings; and a plurality of fasteners passing through the first, second, and third pluralities of openings. The plurality of fasteners: fixedly secure the cover plate, the portion of the turbine shell, and the turbine plate to one another; or fixed securing the portion of the turbine shell to the turbine plate and restricting rotation of the cover plate with respect to the portion of the turbine shell to the turbine plate.

Abstract: A torque converter includes a front cover, an impeller, a turbine and a stator. The impeller includes an impeller shell coupled to the front cover, a plurality of impeller blades disposed inside the impeller shell, and an impeller hub. The impeller hub is formed in an axially extending tubular shape, while being fixed at an engine-side end part thereof to the inner peripheral part of the impeller shell by means of friction welding. The impeller hub also has a burr produced by the friction welding.

Abstract: A hydraulic torque converter for a vehicle, that comprises an impeller (I), a turbine (T) and a reactor (R) with a coaxial axis (A), and respectively fitted with impeller (1), turbine (2) and reactor (3) vanes, each defined by an inner side edge (11;21;31), an outer side edge (12;22;32), a trailing edge (13;23;33) and a leading edge (14;24;34), wherein the trailing edge (13) of the impeller is separated by an axial distance d1 from the leading edge of the turbine, and the trailing edge of the turbine is separated by an axial distance d2 from the leading edge of the reactor, the d2/d1 ration being equal to or lower than 1.4.

Abstract: The invention relates to an internal combustion engine comprising a plurality of subunits which each comprise a crankshaft part, at least one piston being accommodated on a crank of each crankshaft part by means of a connecting rod, wherein at least one first subunit is permanently operated while the internal combustion engine is operating, and at least one additional subunit can be switched off. To switch off a subunit and to disconnect the crankshaft parts from each other, the crankshaft parts of at least one first subunit and an adjacent second subunit that can be switched off are connected to each other in a rotationally locked manner and can move relative to each other with respect to the rotational axes thereof in such a way that a rotational motion applied to the crankshaft part of the second subunit by the crankshaft part of the first subunit is substantially suspended.

Abstract: Among first and second stators of a torque converter supported on a fixed part by a one-way clutch corresponding to the stators, the number of second stator blades of the second stator on the downstream side in the direction of flow of oil is larger than the number of first blades of the first stator on the upstream side, and the maximum value t2 for blade thickness of the second stator blade is smaller than the minimum value t1 for blade thickness of the first stator blade. Therefore, it is possible to ensure that there is a sufficient gap (?) between a trailing edge of the first stator blade and a leading edge of the second stator blade, thus preventing the flow of oil from being stopped by the gap (?), and it is possible to align effectively the flow of oil by means of the second stator blades.

Abstract: A stator assembly for a torque converter includes a member fixed against rotation and including engagement surfaces spaced mutually about an axis, a stator formed with pockets spaced about the axis, rockers, each rocker located in a pocket, able to pivot toward and away from engagement with the engagement surfaces, and springs, each spring urging a rocker toward engagement with the engagement surfaces.

Abstract: A hydrodynamic torque converter with a pump, a turbine and a stator, having an increased thickness on the suction side of blade profiles of blades in the stator relative to the pressure side of the blades, in order to reduce the pump torque of the torque converter at low to medium speed ratios without influencing the other features of the characteristic diagram.

Abstract: A thrust roller bearing includes a plurality of rollers, a retainer, an annular first track ring having a track surface, an outer periphery flange part, and a first claw part, and an annular second track ring having a track surface, an inner periphery flange part, and a second claw part. Bearing internal gaps to allow the eccentric rotation of the first track ring and the second track ring are provided between the outer periphery flange part and an outer edge part of the retainer, and between the inner periphery flange part and an inner edge part of the retainer. In addition, at least one of the first and second claw parts is a projection part formed by a bending process. Furthermore, an edge part of the retainer opposed to the projection part has a first slope part formed at a corner part on the side opposed to the track surface, and a second slope part having a radial length relatively shorter than that of the first slope part, and formed at a corner part on the opposite side in a thickness direction.

Abstract: A hydrodynamic torque converter, having a housing arrangement is filled with fluid and an impeller with a plurality of impeller vanes successively arranged in circumferential direction around an axis of rotation, a turbine in a housing interior, the turbine has a plurality of turbine vanes successively arranged in circumferential direction around the axis of rotation, and a stator with stator vanes successively arranged in circumferential direction around the axis of rotation. The impeller, the turbine and the stator form a fluid circulation torus with a torus diameter Td considered radially with respect to the axis of rotation, an outer radius Ra with respect to the axis of rotation, and a torus width considered in direction of the axis of rotation.

Abstract: An improved torque converter impeller has a hemispherical wall with a plurality of vanes attached thereto. The improvement comprises a deflector adjacent the ends of the vanes to deflect fluid during rotation of the impeller such that the fluid is directed to the turbine vanes of the torque converter without overshooting the turbine. The deflector is preferably mounted to the inside surface of the impeller wall and extends 360°.

Abstract: The invention relates to a transmission with a transmission housing and at least one hydrodynamic component, of which at least one region is arranged in an integral manner with the transmission housing of the hydrodynamic component. The transmission housing is arranged in a substantially tubular way with an opening at each end. The region of the hydrodynamic component which is arranged integrally with the transmission housing is arranged as a functional element of the hydrodynamic component and arranged between the openings. The inner cross section of the transmission housing is arranged to be constant or expanding from the functional element to the respective opening. The transmission housing can thus be demolded in a simple manner and can be cast without any lost cores in permanent molds.

Abstract: The present invention broadly comprises a blade for a torque converter stator including a body, a first end, and a second end; a stator blade assembly; and a stator for a torque converter including a plurality of blades, a housing, and a core ring. The first end is arranged to engage the housing and the second end is arranged to engage the core ring. In some aspects, the blade is stamped or the body is arcuate. The assembly includes a plurality of separate blades. In some aspects, each blade is stamped or bodies for adjacent blades at least partially overlap with respect to a radial plane through an axis for the stator. In some aspects, an axial opening between blades widens radially outward or inward.

Abstract: A blade for a stator in a torque converter including: a first blade segment connected to first inner and outer circumferential sections; a second blade segment, separately formed from the first blade segment, connected to second inner and outer circumferential sections, and including first and second portions; and a channel disposed between the first and second blade segments. In a circumferential direction, the first and second portions are separated by the channel.

Abstract: A stator support device for a torque converter having a stator wheel and a non-rotating member has a one-way clutch and a bearing race. The one-way clutch includes an outer race disposed along the inner periphery of the stator wheel, an inner race connected to the outer periphery of the non-rotating member to prevent rotation of the inner race relative to the non-rotating member, and an end bearing provided between the outer race and the inner race. The bearing race is disposed at a side face of the outer race. The bearing race is supported so as to be rotatable in the circumferential direction. A gap is formed between the bearing race and the stator wheel.

Abstract: A stator unit for a torque converter includes a stator, a one-way clutch mounted radially inside the stator, and thrust bearings provided on both axial sides of the one-way clutch. The one-way clutch includes an outer ring having a peripheral wall and side walls extending radially inwardly from the respective side edges of the peripheral wall and each having a flange formed at the radially inner edge thereof, an inner ring which is in sliding contact with the flanges, and sprags disposed between the inner surface of the peripheral wall and the outer surface of the inner ring. Each of the thrust bearings has a stake which is pressed into one of engaging steps formed in the radially inner surface of the stator until the bearing ring of the thrust bearing is pressed against one of the side walls and one of axial end surfaces of the inner ring, thereby retaining the component parts so as to be inseparable from the stator.

Abstract: An impeller, for example, a guide wheel for a hydrodynamic speed variator/torque converter, including a plurality of blades. Each blade has a blade base and a blade tip area. Stiffening means are situated in at least one of the blades in at least the blade base area and/or the blade tip area.

Abstract: A torque converter structure having a plurality of high efficiency secure weld free connections between blades and the shells of the pump and turbine that reduces flow between the blades and the shells. At least one blade within the torque converter is securely mechanically attached to the shell of the pump or turbine in the absence of welding by providing a tab on the blade that is bent on a portion that passes through a slit in the shell to secure the blade to the shell and by inserting a major part (greater than 50%) of a portion of an edge of the blade, that runs coextensively with a surface of the shell into a depression in that shell until the edge of the blade diverges from the shell. The invention also includes the unique blade and shell and a method for using them to make a torque converter of the invention.

Abstract: A torque converter 1 is a device for transmitting torque by fluid, and includes a front cover 14, an impeller 18, a turbine 19, and a stator 20. The impeller 18, the turbine 19 and the stator 20 constitute a fluid operating chamber 6 having a torus shape. Flattening (L/D1) is less than or equal to 0.18, wherein D1 is an outer diameter of the fluid operating chamber 6 and L is the axial direction length of the fluid operating chamber 6. In the impeller shell 22, a surface 22a on which the impeller blades 23 are fixed has an impeller straight portion 22b showing a straight line in a cross section. In the turbine shell 25, a surface 25a on which the turbine blades 26 are fixed has a turbine straight portion 25b showing a straight line in a cross section.

Abstract: A hydrodynamic torque converter includes a pump wheel with a plurality of pump wheel vanes arranged in a row in the circumferential direction around an axis of rotation; a turbine wheel, which can rotate relative to the pump wheel around the axis of rotation and which has a plurality of turbine wheel vanes arranged in a row in the circumferential direction around the axis of rotation; and a stator with a plurality of stator vanes arranged in a row in the circumferential direction around the axis of rotation. The pump wheel, the turbine wheel, and the stator define a hydrodynamic circuit with an outside diameter Da, an inside diameter Di, and a maximum axial length La, where (1) Di/Da<0.58 and (2) Da5?5.2?1×1010×M, where M is the maximum torque in Nm to be transmitted via the hydrodynamic torque converter, and Da is the outside diameter of the hydrodynamic circuit in mm.

Abstract: A torque converter in which the output height of the output openings of the stator is higher than the input height of the input openings, producing a stator with a diffuser effect.

Abstract: The apparatus of the present invention provides a torque converter that is looser at stall than it is at 0.8 speed ratio. The torque converter includes a stator having a plurality of stator blades. The stator blades each define a primary leading edge, a trailing edge, and preferably include a flange defining a secondary leading edge. The stator blade flange extends away from each blade such that the secondary leading edge points generally to the primary leading edge of a preceding stator blade. In this manner, the secondary leading edge is designed at stall to catch flow coming past the primary leading edge of the upstream blade and to redirect the flow back out of the front of the stator. The secondary leading edge is further designed to hide in the wake of the primary leading edge at higher speed ratios.

Abstract: A hydrodynamic converter is provided having a pump wheel, which is flowed through in operation from the inside to the outside; a turbine wheel, which is flowed through in operation from the outside to the inside; guide blades between the pump wheel and the turbine wheel; and guide blades between the turbine wheel and the pump wheel. The converter can have a speed ratio of between the speed nT of the turbine wheel and the speed nP of the pump wheel of between 1.2 and 4 at approximately even or falling ? progress. The converter can also have different speed ratios between pump and turbine, which can be realized with the ratio R/r equal to or larger than 1.

Abstract: A torque converter assembly is provided, which includes an impeller, a turbine, and a stator. The impeller and the turbine each have a plurality of passages for directing fluid. The inlet and outlet of each passage are larger in cross-sectional area than the middle portion of the passage, located between the inlet and outlet. This structure reduces energy losses, which typically occur near the midpoint of the passage due to flow separation. Additionally, reducing the flow area of the torus of the impeller and turbine permits an overall thinner torque converter, which is preferred for engine packaging purposes. The stator includes a core, a shell, and a plurality of stator blades. One end of each stator blade is fixed to the core, while the opposite end is fixed to the shell. Each stator blade has a mean camber line and an associated mean camber line length. The maximum thickness of each stator blade is approximately 20% of the mean camber line length.

Abstract: A stator blade for a hydrokinetic torque converter, the blade profile having geometric characteristics that improve torque flow efficiency in the converter torque flow circuit, whereby the torque converter efficiency at high speed ratios is improved without significant adverse effects on the converter torque ratio at stall and at low speed ratios.

Abstract: A torque converter stator for improved fluid coupling and acceleration is provided. The stator includes a plurality of circumferential long and short blades for increasing torque to an automatic transmission by employing reaction force produced when a flow transmission oil within the torque converter impinges an exterior surface of the blades. The stator utilizes the plurality of circumferential short blades for increasing torque during times a vehicle starting or accelerating and for permitting an obstructed fluid coupling in the turbine and impeller are a coupling point.

Abstract: A stator disposed between an impeller and a turbine of a torque converter including: an annular shell; an annular core disposed radially outside the shell; and a plurality of stator blades connecting the shell and the core. Each blade comprises a leading edge adjacent to the turbine, a trailing edge adjacent to the impeller, a streamlined concave surface extending from the leading edge to the trailing edge and substantially facing the turbine, and a streamlined convex surface extending from the leading edge to the trailing edge and substantially facing the impeller. A cross-sectional area of the stator blade increases as it approaches the shell. A predetermined gap is formed between the neighboring stator blades such that the neighboring stator blades do not overlap with one another.

Abstract: In a torque converter comprised of three major rotating elements, namely a pump impeller formed integral with a converter cover, a turbine runner to which a driving power is transmitted through a working fluid from the pump impeller, and a stator disposed between the pump impeller and the turbine runner, the stator is supported on a transmission case via a one-way clutch and has a plurality of stator blades. In order to balance the enhanced vehicle's startability and improved fuel economy at idle, the ratio W/D of a stator-blade axial length W to a torque-converter nominal diameter D is set to satisfy a predetermined inequality 0.030?W/D?0.052.

Abstract: In a torque converter comprised of three major rotating elements, namely a pump impeller, a turbine runner to which a driving power is transmitted through a working fluid from the pump impeller, and a stator disposed between the pump impeller and the turbine runner, a flattening ratio L/D of a sum L of an pump-impeller axial length and a turbine-runner axial length to a torque-converter nominal diameter D is set to be less than or equal to 0.21. In order to balance contradictory requirements, namely reduced curvature loss, i.e., enhanced converter efficiency, proper rate-of-change in working-fluid flow passage area, and proper breakaway of working fluid from each turbine blade, a ratio r/R of a radius of curvature r of a turbine-core outer peripheral curved surface to a radius of curvature R of a turbine-shell outer peripheral curved surface being set to satisfy a predetermined inequality 0.3≦r/R≦0.5.

Abstract: The invention relates to a hydrodynamic converter comprising a torus-shaped working chamber surrounding the converter axis, said chamber having the form of a ring channel in an axial cross-section; an impeller which is rotationally fixed to an input shaft; a turbine wheel which is rotationally fixed to an output shaft, and a ring of adjustable guide vanes. The converter is designed in such a way that it has a lambda value of less than 0.0005.

Abstract: An impeller, a turbine, and a stator form a torus of a torque converter. A elliptic ratio L/H of an axial length L of the torus to a radial height H of the torus is 0.72 or smaller. A diameter ratio (D2/D1) of an inner diameter D2 of the torus to an outer diameter D1 of the torus is 0.45 or greater. The impeller includes an impeller core, and an impeller axial length ratio (Lp/D1) of an axial length Lp of the impeller core to the outer diameter D1 of the torus is in a range between 0.030 to 0.045. The turbine includes a turbine core, and an turbine axial length ratio (Lt/D1) of an axial length Lt of the turbine core to the outer diameter D1 of the torus is in a range between 0.021 to 0.029.

Abstract: A dual displacement engine is provided with first and second crankshaft portions which are fluidly coupled to one another, for example, by a torque converter in order to provide an engine that can be utilized with alternative configurations of engine cylinders. Specifically, a first crankshaft portion can be provided with, for example, four pistons as a primary crankshaft portion for driving the vehicle, while a second crankshaft portion can be selectively engaged via a fluid coupling to supplement the power provided by the primary crankshaft portion. Thus, the vehicle can be operated using the primary crankshaft portion for fuel efficient operation while the second crankshaft portion can be selectively engaged for meeting higher torque demand requirements as necessary.

Abstract: A stator disposed between an impeller and a turbine of a torque converter including: an annular shell; an annular core disposed radially outside the shell; and a plurality of stator blades connecting the shell and the core. Each blade comprises a leading edge adjacent to the turbine, a trailing edge adjacent to the impeller, a streamlined concave surface extending from the leading edge to the trailing edge and substantially facing the turbine, and a streamlined convex surface extending from the leading edge to the trailing edge and substantially facing the impeller. A cross-sectional area of the stator blade increases as it approaches the shell. A predetermined gap is formed between the neighboring stator blades such that the neighboring stator blades do not overlap with one another.

Abstract: In a torque converter comprised of three major rotating elements, namely a pump impeller, a turbine runner to which a driving power is transmitted through a working fluid from the pump impeller, and a stator disposed between the pump impeller and the turbine runner, a flattening ratio L/D of a sum L of an pump-impeller axial length and a turbine-runner axial length to a torque-converter nominal diameter D is set to be less than or equal to 0.21. In order to balance contradictory requirements, namely reduced curvature loss, i.e., enhanced converter efficiency, proper rate-of-change in working-fluid flow passage area, and proper breakaway of working fluid from each turbine blade, a ratio r/R of a radius of curvature r of a turbine-core outer peripheral curved surface to a radius of curvature R of a turbine-shell outer peripheral curved surface being set to satisfy a predetermined inequality 0.3≦r/R≦0.5.

Abstract: A hydrokinetic torque converter, which exhibits important advantages regarding the consumption of fuel and the operation at low RPM in the power train of a motor vehicle, has a stator, a pump and a turbine which jointly form a toroidal structure having a meridian cross-sectional outline which is asymmetrical with reference to at least one axis other than the rotational axis of the housing of the torque converter.

Abstract: Stator structure is provided which is capable of suppressing an increase in fluid sound while maintaining high driving force transmission efficiency. The stator structure is disposed between the turbine runner and pump impeller of a torque converter and is provided with a plurality of circumferential vane portions for increasing torque which is input to the automatic transmission by employing reaction force produced when a flow of oil within the torque converter is abutted in a stall state. Rib portions for rectifying a flow of abutted oil are formed on the exterior surface of the vane portion.

Abstract: A torque converter including a stator rotatable about an axis and having a stator hub, and a thrust bearing mounted to the stator hub. The stator hub has a recessed portion that is recessed from one axial end face of the stator hub. The thrust bearing includes a bearing race received by the recessed portion of the stator hub. A coupling connects the bearing race with the stator hub. The coupling includes a first engaging part disposed on an outer periphery of the bearing race and a second engaging part engaged with the first engaging part and disposed on an outer periphery of the recessed portion in opposed relation to the outer periphery of the bearing race. The first and second engaging parts cooperate to prevent a relative rotation between the bearing race and the stator.

Abstract: A vehicle torque converter for forming a circulation path of an oil and transmitting a rotary torque is provided which includes an impeller, turbine and stator, each having a plurality of blades. Each blade of the stator is divided into a radially inner half portion and a radially outer half portion in a radial direction of the circulation path. The radially inner half portion has a front edge that is set back from a front edge of the radially outer portion, and is inclined with respect to a direction of a rotation axis of the torque converter by a larger angle than the radially outer half portion.

Abstract: Hydrodynamic torque converter which comprises blade wheels in the form of a reactor, a pump wheel and a turbine wheel with individual blades which are connected to an outer wall, whereby a torque can be transmitted from the pump wheel to the turbine wheel by means of pressure medium which flows along a flow path from the pump wheel to the turbine wheel, and is transported via the reactor back to the pump wheel, whereby at least one blade wheel comprises at least one stabilizer ring which creates a connection of the individual blades on their exposed sides, and by means of which stabilizer ring the flow path of the pressure medium can be influenced to reduce the flow losses.

Abstract: A fluid torque converter using a stator assembly adapted to be formed by a die assembly essentially consisting of two halves that can be separated apart in an axial direction when removing a formed stator assembly, a part of an inner circumferential surface of the core ring adjacent to a pressure surface of each of the stator blades is provided with a bulge. Owing to the bulges provided in the inner circumferential surface of the core ring adjacent to the pressure surfaces of the stator blades, the annular fluid flow can be conducted in smooth fashion, and flow separation can be avoided. As a result, the efficiency of the torque converter and the power response of the automatic transmission system can be improved while the stator assembly can be fabricated at a low cost by using a die assembly which can be drawn apart in the axial direction.

Abstract: A vaned element of a fluid coupler such as a torque converter includes vanes having a depression extending from a leading surface area to a trailing edge of the vane. The depression avoids multiple surface layer changes which introduce turbulence to flow of fluid past the vane. The depression also forms reinforcing ribs in the form of raised walls which dimensionally stabilize the mounting tabs for the vane. In addition the vane construction is light weight since it permits the use of simple cross-sectionally shaped vanes while improving the speed capability of the torque converter and the strength of the vaned elements. The blade construction permits automated assembly techniques for the vaned elements.

Abstract: A method and device for simulating properties of a fluid torque converter such as torque ratio, capacity factor and efficiency includes involving the execution of the steps of finding a plurality of parameters including a fluid passage angle and a fluid passage resistance from a vane profile of a vane wheel of a fluid torque converter, and simulating the properties of the fluid torque converter according to the parameters and an input and output torque relationship based on an angular momentum theory. The fluid passage angle is corrected according to a slip ratio between rotational speeds of input and output ends of the fluid torque converter for the purpose of accounting for the influences of the occurrence of flow separation. Good results can be obtained by correcting the outflow angle of a stator vane array by using a correction value given as a mathematical function of the slip ratio. Thus, the accuracy of simulation can be substantially improved with a minimum increase in the computer time.

Abstract: A quick acceleration fluid coupling comprising: a fluid coupling working chamber defined by an impeller attached to a driving shaft, a runner attached to a driven shaft, and an impeller casing attached to the impeller and surrounding the runner; and a passage for supplying hydraulic oil into the fluid coupling working chamber; wherein the passage includes a control valve operable to be fully opened and closed rapidly, and a bypass passage having an oil control orifice, which bypasses the control valve; thereby the rotational speed of the driven shaft can be changed rapidly from the lowest to the highest or vice versa.

Abstract: A torque converter has an axial type reactor that is disposed between a turbine and an impeller at an inner end to form a toroid. The reactor blades have leading edges that slant toward the turbine in the radially inward direction and form an angle with an inner shell ring that varies between 60.degree. and 90.degree.. The leading edges also slant circumferentially so that radial lines intersecting the respective connection points of the leading edge with the inner shell ring and an outer core ring form a central angle that varies between 5.degree. in one direction and 12.degree. in the other direction.

Abstract: A torque converter is provided for transmitting torque from an engine output shaft to an input shaft of a transmission. The torque converter includes a pump, connected with the engine output shaft, which includes a shell portion disposed at an outer portion thereof, a core portion disposed at an inner portion thereof and a plurality of blades disposed between the shell portion and the core portion. A turbine is disposed facing the pump and is driven by the pump through hydraulic fluid. The turbine includes a shell portion disposed at an outer portion thereof, a core portion disposed at an inner portion thereof and a plurality of blades disposed between the shell portion and the core portion. A stator is disposed between the pump and the turbine for torque amplification.

Abstract: A torque convertor having a tubular toroidal member constituted by a pump, a turbine and a stator is so dimensioned that sufficient room is provided to accommodate associated components without sacrificing performance standards. In particular, since the cross sectional area of the flow passage of the stator, wherein eddies tend to generate and power transmission loss due to fluid collision increases, is larger in proportions to the cross sectional area of either the pump or the turbine the fluid turbulence is reduced.

Abstract: A coreless torque converter has a unique layout or arrangement of stator, pump impeller and turbine runner, in which at least one of these elements has a portion formed to have an axial dimension which is reduced to minimize an offset amount of a center of swirl generated by working fluid recirculating through the converter to provide a high torque ratio and improved efficiency.